#include<stdio.h>
#include<sys/types.h>
#include<unistd.h>
int main()
{
  pid_t id=fork();
  if(id==0)
  {
   // int count=5;
    while(1)
    {
       printf("我是子进程：%d \n",getpid());
       sleep(1);
    }
  }
else {
     
      int count=5;
      while(count--)
      {
      printf("我是父进程：%d\n",getppid());
      sleep(1);
      }
}
 // {
//    printf("子进程：%d/n",getpid());
//     printf("父进程：%d/n",getppid());//usr  }
  return 0;
}
